Pipe-wrench.



N0. 63L056. Patented Aug. l5, I899. I. S. VAN ETTEN & W. E. BERRY.

PIPE WRENCH.

(Application filed Apr. 12, 1899.) aNo Model.)

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UNITED STATES PATENT OFFICE.

IRA SYLVESTER VAN ETTEN AND WILLIAM EDWARD BERRY, OF OYGNET,

OHIO; SAID BERRY ASSIGNOR TO SAID VAN ETTEN; SAID VAN ETTEN ASSIGNOR OFONE-HALF TO CHARLES M. STANBURROUGH AND IVILLIAM J.

CHRISTIE, OF SAME PLACE.

PIPE-WRENCH.

Application filed April 12, 1899.

To to whom it may concern.-

Be it known that we, IRA SYLvEs'rER VAN ETTEN and WiLLIAM EDWARD BERRY,citiz'ens of the United States, residing at Cygnet,

in the county of Wood and State of Ohio, have invented a new and usefulPipe-Wrench, of which the following is a specification.

This invention relates to wrenches, and particularly to pipe wrenches ortongs; and the to object thereof is to provide such a wrench which willtightly grip a pipe or other similar object without slipping and whichmay be readily released therefrom at the desired moment.

To this end the present invention consists in the combination andarrangement of parts, as will be hereinafter more fully described, shownin the drawings, and particularly pointed out in the claims. 1

In the drawings, Figure 1 is a side elevation of the wrench fitted to apipe. Fig. 2 is a longitudinal sectional View thereof. Fig. 3 is an edgeview of the wrench.

Referring to the accompanying drawings, 1 designates a longoperating-lever having at one end arigid transverse and beveled orinclined jaw 2, forming the inner jaw of the wrench. The face of thisjawis provided with a dovetailed groove 3, in which is detachably fitteda serrated block 4, forming the clamping-face of the jaw.

The outer j aw 5 has a slightly-curved shank 10, disposed at an acuteangle to the jaw and bifurcated, as shown in Fig. 3, forming oppositearms 6, which are adapted to embrace the lever 1 below the fixed jawthereof. These arms are provided with a plurality of openings 7 neartheir outer edges, and a removable pivot-pin Sis adapted to be passedthrough an opening 9 in the lever l and through anyone of the openings7, whereby the outer jaw 5 may be adjusted upon the lever with respectto the inner jaw in order to accommodate the wrench to pipes ofdilferent sizes.

Upon the inner edge of the shank 10 just below the outer jaw 5 andopposite the inner jaw a serrated surface 11 is provided upon aremovable block 12, which fits in the acute SPECIFICATION forming partof Letters Patent No. 631,056, dated August 15, 1899.

Serial No. 712,789. (No model.)

I angle formed by the jaw 5 and its shank 10.

This block 12 has a shank or tongue 13, which i is fitted in a recess14:, provided in the inner edge of the shank 10, as best shown in Fig.2. Apin or key 15 is passed transversely through the shank and the shankof the block 12, whereby the latter is removablyfitted in place. Theblock is wedge-shaped, being widest at its upper end, tapering downwardand inward toward the shank 10 upon its outer serrated face, and isadapted to engage the back of a pipe placed between the jaws 4 and 5 andform a stop to prevent the pipe from slipping backward and out frombetween the said jaws. The teeth or serrations of the wedgeblock 12 areinclined downward and outward from the shank 10, and the serrations ofthe block at also are inclined away from the shank. The under face 16 ofthe outer jaw is without serrations or teeth of any character.

In applying the wrench the outer jaw is engaged about a pipe 17, and bypressing upon the lever 1 in a direction to drawthe jaw 2 toward theserrated block 12 of the shank 10 the pipe is firmly clamped between thejaws 2 and 5 and the serrated face of the block 12. It will be notedthat by reason of the inclination of the jaw 2 the serrations thereofextend upwardly and those of the block 12 extend downwardly, whichdiiferent direction of the serrations prevents the Wrench from slippingor turning upon the pipe. Imme- 8o diately upon relieving the pressurefrom the lever 1 the wrench is perfectly free to be removed from thepipe or to be worked backward to obtain a new grip. This movement ispermitted by reason of the smooth gripping-face of the outer jaw and theoutward inclination of the serrations of the inner jaw 2, for the smoothjaw oifers no resistance and neither do the outwardly-inclinedserrations of the jaw 2. When the Wrench is set upon a pipe, theserrated faces of the jaw 2 and the block 12 prevent the wrench fromturning, as explained, and it is therefore not necessary to provide theouter jaw with serrations, and by having the said jaw smooth or 5 freefrom serrations the wrench loosens its grip and is perfectly free to bemoved independently of the pipe immediately upon relieving the pressurefrom the lever 1.

This relative arrangement of the serrated and non-serratedgripping-faces of the wrench is the characteristic and essential featureof the present invention and results in an improved and highly-usefulform of Wrench.

Changes in the form, proportion, size, and the minor details ofconstruction within the scope of the append ed claims may be resorted towithout departing from the spirit or sacrificing any of the advantagesof this invention.

Having thus described the invention, what is claimed is 1. In a wrench,the combination of a lever having a toothed orserrated face which formsthe inner jaw, an outer jaw havinga plain face and a shank which ishinged to the lever so that the outer jaw may cooperate with thein- -nerjaw, theinner edge of the shank being provided with a removable blockhaving a serrated face, said block fitting in the angle formed by theouter jaw and its shank and abutting against the shank and jaw, theserrations of the inner jaw and those on the removable block beinginclined in different directions, substantially as described.

2. In a wrench, the combination of a lever one end of which is providedwith serrations extending outwardly, forming the inner jaw, an outer jawhaving a smooth gripping-face, and a shank which is pivoted or hinged tothe lever so that the outer jaw may cooperate with the inner jaw, and aremovable wedge-shaped block, having an attaching-shank fitted in arecess formed in the extension immediately below the outer jaw, thegripping-surface of the block being inclined downward and inward towardthe shank of the jaw, and provided with serrations which extenddownward, whereby the serrated surfaces are adapted to grip a pipe andprevent the wrench from turning thereon, and the wrench is free to bemoved independently of the pipe, immediately upon relieving the pressurefrom the lever, substantially in the manner shown and described.

In testimony that we claim the foregoing as our own we have heretoaflixed our signatures in the presence of two witnesses.

IRA SYLVESTER VAN ETTEN.

WILLIAM EDWARD BERRY. WVitnesses:

P. I. MOVELIA,

H. V. MCGIVERN.

